CN105382902A - Novel wood impregnation and carbonization treatment method - Google Patents
Novel wood impregnation and carbonization treatment method Download PDFInfo
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- CN105382902A CN105382902A CN201510812380.3A CN201510812380A CN105382902A CN 105382902 A CN105382902 A CN 105382902A CN 201510812380 A CN201510812380 A CN 201510812380A CN 105382902 A CN105382902 A CN 105382902A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/007—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process employing compositions comprising nanoparticles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/20—Removing fungi, molds or insects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/30—Fireproofing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/70—Hydrophobation treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/90—UV-protection
Abstract
The invention discloses a novel wood impregnation and carbonization treatment method. The method includes the three steps of wood impregnation pretreatment, high-temperature treatment and surface treatment. Impregnation modification liquid in wood impregnation pretreatment is a mixed solution with the weight ratio of 2-6:0.2-0.6:0.3-0.7:1-5:0.1-0.4 of a sodium silicate solution, nanometer silicon dioxide powder, nanometer zinc oxide powder, a zinc borate solution and sodium lignin sulfonate. During the cooling stage of high-temperature treatment of wood, an intermittent type steam jetting method is used for cooling, the temperature in a carbonization room is reduced to 120-125 DEG C at the speed of 8-11 DEG C/h, and heat is preserved for 1.2-1.4 h; then the temperature is reduced to 90-100 DEG C at the speed of 2-5 DEG C/h, and heat is preserved for 0.8-1.2 h; and meanwhile steam with the same temperature is used for conducting humidifying and moisture regaining treating on the wood, treatment is conducted for 7-9 h, and the moisture content of the wood is adjusted back to 4-7%.
Description
Technical field
The present invention relates to a kind of novel timber and impregnate carbonizing treatment method, belong to Wood Science and Technology field.
Background technology
Timber is natural environmental-protective material, and not only have and absorb ultraviolet function, also have effect of temperature control damping, the more important thing is that it has renewable, machinable characteristic, therefore, it is widely used in the field such as building materials, furniture.But also there is a lot of defect in timber, as when timber uses can with surrounding environment generation exchange of moisture and produce drying shrinkage with wet and rise, thus cause woodwork to be out of shape, cracking; Timber is again the food of many mushrooms and insect, so woodwork is easily mouldy, infested.In order to solve such technical problem of timber, people adopt physics and chemistry modification technology to carry out modification to it.Conventional physical modification method is heat_treated wood method (also known as carbonized wood method), and chemical modification method is timber pickling method.By these modification technologies, timber distortion can be reduced, its biodurable can be improved again, simultaneously can also its service life of prolongation to a certain degree.
Carbonized wood carrying out charing process containing applying high temperature under any chemical agent condition to timber, hydroxyl concentration in its component being reduced, thus increases its dimensional stability; Also change its some nutritional labeling simultaneously, thus there is good insect protected function.Carbonized wood can be divided into again top layer carbonized wood and deep charring wood.Top layer carbonized wood, burns wood also referred to as technique carbonized wood, charcoal, mainly refers to and to roast with oxygen welding gun, wood surface is made to have the very thin charring layer of one deck, can the paint of analogy timber to the change of wood performance, but the wood grain of concave-convex surface can be highlighted, produce stereoeffect; Deep charring wood, be also called complete carbonized wood, homogeneity carbonized wood, mainly refer to the high temperature carbonization technical finesse timber deep layer through about 200 DEG C, thus destroy its nutritional labeling and its water absorbing functional groups hemicellulose of restructuring, and then the function realizing antiseptic insect-repelling and effect of increasing the service life.But carbonized wood also comes with some shortcomings part, as the timber after high temperature carbonization becomes fragile, density, mechanical strength decline, and may rupture in production or use procedure; Its dimensional stability of carbonized wood obtained lower than 200 DEG C of process, corrosion resistant performance, weather resistance, fire resistance are not significantly improved; Anti-ant antimildew function declines to some extent, than being easier to by the erosion of termite moth after the carbonization of wood.
Timber pickling, when referring to that timber floods in the solution of water-soluble low molecular weight resin, resin diffuses into wood cell wall and makes timber increase-volume, and drying removing moisture, resin solidifies due to heating, generates water-fast polymer.Dimensional stability, the mechanical strength performance of the timber after impregnation process all significantly improve.As patent of invention CN101716790B discloses one " method for producing rubber tree carbonized wood by resin pretreatment ", the method is by vacuum pressure impregnating resin, can increase the intensity of rubber tree carbonized wood, also make its dimensional stability and durability more excellent.But its fire resistance is not improved.In order to improve the fire resistance of carbonized wood, people carry out many-sided research, as patent of invention CN103240780A discloses one " Ludox impregnates the method that pretreatment improves carbonized wood performance ", the method prepares carbonized wood by impregnating pretreatment with Ludox, although the fire resistance of carbonized wood, termite-proof performance have had improvement to a certain degree, but effect is undesirable, thus limit the scope of application of carbonized wood.Moreover its water resistance is also general, be difficult to the working environment being applicable to contact with water for a long time.Therefore, the carbonized wood developing a kind of fire resistance, termite-proof performance, water resistance good is very important.
Summary of the invention
Improve fire resistance for timber pickling in above-mentioned prior art, termite-proof performance pays no attention to the technical problem thinking of water resistance difference, technical problem to be solved by this invention is that the novel timber proposing a kind of fire resistance, termite-proof performance, water resistance good impregnates carbonizing treatment method.
The present invention for the taked technical scheme that solves the problem is:
A kind of novel timber impregnates carbonizing treatment method, and its step is as follows:
1, wood impregnation pretreatment
Timber is placed in application of vacuum tank, first 0.2 ~ 0.6h is carried out to application of vacuum tank and vacuumize; Then inject and impregnate modification liquid, after pending tank fills, apply 1.2 ~ 1.4Mpa, the dwell time is the pressure of 2.1 ~ 2.3h; Finally carry out 1.1 ~ 1.3h to application of vacuum tank to vacuumize, what discharge timber was residual impregnates modification liquid, takes out timber.
Preferably, timber is placed in application of vacuum tank, first 0.4h is carried out to application of vacuum tank and vacuumize; Then inject and impregnate modification liquid, after pending tank fills, apply 1.3Mpa, the dwell time is the pressure of 2.2h; Finally carry out 1.2h to application of vacuum tank to vacuumize, what discharge timber was residual impregnates modification liquid, takes out timber.
The described mixed solution impregnating modification liquid and be made up of sodium silicate solution, nano silica powder, nanometer Zinc oxide powder, Firebrake ZB solution and sodium lignin sulfonate.Wherein, their weight part ratio is: sodium silicate solution: nano silica powder: nanometer Zinc oxide powder: Firebrake ZB solution: sodium lignin sulfonate=2 ~ 6:0.2 ~ 0.6:0.3 ~ 0.7:1 ~ 5:0.1 ~ 0.4.
Preferably, the described modification liquid weight part ratio that impregnates is: sodium silicate solution: nano silica powder: nanometer Zinc oxide powder: Firebrake ZB solution: sodium lignin sulfonate=4:0.4:0.5:3:0.3.
Described sodium metasilicate modulus is 1.2 ~ 1.6; Described nano silica powder, the particle size range of nanometer Zinc oxide powder are 1 ~ 100nm.
Preferably, described sodium metasilicate modulus is 1.4; Described nano silica powder, the particle size range of nanometer Zinc oxide powder are 10 ~ 80nm.
2, timber high-temperature process
A) preparatory stage: will the good timber of pretreatment be impregnated, put into the carbonization chamber of carbonization device by well word method stacking, and close the gate of carbonization chamber;
B) warm-up phase: charing indoor temperature is carried out drying and preheating to be raised to 55 ~ 70 DEG C in 16 ~ 26h to it, makes the moisture content of timber be less than 12%;
C) intensification, holding stage: be first warmed up to 90 ~ 100 DEG C by carbonizing indoor temperature with the speed of 10 ~ 14 DEG C/h, and be incubated 1.2 ~ 1.6h; Then be warmed up to 120 ~ 125 DEG C with the speed of 3 ~ 5 DEG C/h, and be incubated 2.2 ~ 2.4h, make the moisture content of wood internal be 0; The speed of last 12 ~ 16 DEG C/h is warmed up to 205 ~ 215 DEG C, and is incubated 2 ~ 4h, adopts batch (-type) spraying steam method to spray into steam as protective gas in this temperature rise period;
D) temperature-fall period: adopt the cooling of batch (-type) spraying steam method, first cool to 120 ~ 125 DEG C by carbonizing indoor temperature with the speed of 8 ~ 11 DEG C/h, and be incubated 1.2 ~ 1.4h; Then cool to 90 ~ 100 DEG C with the speed of 2 ~ 5 DEG C/h, and be incubated 0.8 ~ 1.2h, use the steam of identical temperature to carry out damping moisture regain process to timber, process 7 ~ 9h, adjusts back 4 ~ 7% by the moisture content of timber simultaneously; Finally, Temperature fall, to room temperature, takes out timber.
3, wood surface process
A) preparatory stage: timber good for high-temperature process is carried out surface cleaning and drying;
B) processing stage: by brushing through in aluminum sulfate and after rare methane-siliconic acid sodium solution surface treatment is carried out to timber, overcoating brush of laying equal stress on is to certain thickness (timber termination brushes thick point a little), and maintenance 3 days or more.
Beneficial effect of the present invention is embodied in following several respects:
1, adopt the mixed solution of sodium silicate solution, nano silica powder, nanometer Zinc oxide powder, Firebrake ZB solution and sodium lignin sulfonate composition as impregnating modification liquid, compared with prior art, it not only has the characteristic of nano silicon, and with: sodium metasilicate high temperature can form the feature of Silica hydrogel solid, silica, effectively can improve the mechanical strength of timber, water resistance and fire resistance; Nano zine oxide can improve the density of timber, mechanical strength, anti-wear performance and ageing-resistant performance, can also shield infrared, ultraviolet and sterilization simultaneously, and then improve the integration capability of timber; Firebrake ZB is Heat stability is good not only, and good dispersion, can effectively improve the length of penetration of impregnating modification liquid like this, thus improves the termite-proof performance of insect protected and the fire resistance of timber, and then meets the application request of timber; Sodium lignin sulfonate, as surfactant, can reduce the tension force of capillary in timber, reduces and uses pressure, augmented flow rate, improve the permeability of timber, making to impregnate modification liquid active ingredient can more penetrate in wood internal, thus improves the various performances of timber.
2, adopt stepped continuous heating and cooling method, effectively can to prevent in wood treatment the defects such as output cracking, distortion, the stress that wood internal is formed can also be eliminated simultaneously, thus obtain the timber of more good quality.
3, the present invention adopts drying and charing once to complete, and compared with prior art, reduces the processing time, enhances productivity.
4, with through in aluminum sulfate and after rare methane-siliconic acid sodium solution surface treatment is carried out to timber, the hydrophobic performance of timber, antiseptic property and mechanical strength can be improved, thus widened the range of application of timber.
Detailed description of the invention
Embodiment 1
A kind of novel timber impregnates carbonizing treatment method, and its step is as follows:
1, choose: sodium metasilicate modulus is 1.4; The particle size range of nano silica powder, nanometer Zinc oxide powder is 10 ~ 80nm.
2, wood impregnation pretreatment
Be that the timber of 1200mm × 130mm × 30mm (long × wide × thick) is placed in application of vacuum tank by specification, first 0.4h carried out to application of vacuum tank and vacuumize; Then inject sodium silicate solution: nano silica powder: nanometer Zinc oxide powder: Firebrake ZB solution: sodium lignin sulfonate=4:0.4:0.5:3:0.3's impregnates modification liquid, after pending tank fills, apply 1.3Mpa, the dwell time is the pressure of 2.2h; Finally carry out 1.2h to application of vacuum tank to vacuumize, what discharge timber was residual impregnates modification liquid, takes out timber.
3, timber high-temperature process
A) preparatory stage: will the good timber of pretreatment be impregnated, put into the carbonization chamber of carbonization device by well word method stacking, and close the gate of carbonization chamber;
B) warm-up phase: charing indoor temperature is carried out drying and preheating to be raised to 62 DEG C in 21h to it, makes the moisture content of timber be less than 12%;
C) intensification, holding stage: be first warmed up to 95 DEG C by carbonizing indoor temperature with the speed of 12 DEG C/h, and be incubated 1.4h; Then be warmed up to 123 DEG C with the speed of 4 DEG C/h, and be incubated 2.3h, make the moisture content of wood internal be 0; The speed of last 14 DEG C/h is warmed up to 210 DEG C, and is incubated 3h, adopts batch (-type) spraying steam method to spray into steam as protective gas in this temperature rise period;
D) temperature-fall period: adopt the cooling of batch (-type) spraying steam method, first cool to 123 DEG C by carbonizing indoor temperature with the speed of 10 DEG C/h, and be incubated 1.3h; Then cool to 95 DEG C with the speed of 4 DEG C/h, and be incubated 1.0h, use the steam of identical temperature to carry out damping moisture regain process to timber, process 8h, adjusts back 6% by the moisture content of timber simultaneously; Finally, Temperature fall, to room temperature, takes out timber.
4, wood surface process
A) preparatory stage: timber good for high-temperature process is carried out surface cleaning and drying;
B) processing stage: by brushing through in aluminum sulfate and after rare methane-siliconic acid sodium solution surface treatment is carried out to timber, overcoating brush of laying equal stress on is to 2mm thickness, and maintenance 3 days.
Embodiment 2
A kind of novel timber impregnates carbonizing treatment method, and its step is as follows:
1, choose: sodium metasilicate modulus is 1.2; The particle size range of nano silica powder, nanometer Zinc oxide powder is 1 ~ 100nm.
2, wood impregnation pretreatment
Be that the timber of 1200mm × 130mm × 30mm (long × wide × thick) is placed in application of vacuum tank by specification, first 0.2h carried out to application of vacuum tank and vacuumize; Then inject sodium silicate solution: nano silica powder: nanometer Zinc oxide powder: Firebrake ZB solution: sodium lignin sulfonate=2:0.2:0.3:1:0.1's impregnates modification liquid, after pending tank fills, apply 1.2Mpa, the dwell time is the pressure of 2.1; Finally carry out 1.1h to application of vacuum tank to vacuumize, what discharge timber was residual impregnates modification liquid, takes out timber.
3, timber high-temperature process
A) preparatory stage: will the good timber of pretreatment be impregnated, put into the carbonization chamber of carbonization device by well word method stacking, and close the gate of carbonization chamber;
B) warm-up phase: charing indoor temperature is carried out drying and preheating to be raised to 55 DEG C in 16h to it, makes the moisture content of timber be less than 12%;
C) intensification, holding stage: be first warmed up to 90 DEG C by carbonizing indoor temperature with the speed of 10 DEG C/h, and be incubated 1.2h; Then be warmed up to 120 DEG C with the speed of 3 DEG C/h, and be incubated 2.2h, make the moisture content of wood internal be 0; The speed of last 12 DEG C/h is warmed up to 205 DEG C, and is incubated 2h, adopts batch (-type) spraying steam method to spray into steam as protective gas in this temperature rise period;
D) temperature-fall period: adopt the cooling of batch (-type) spraying steam method, first cool to 120 DEG C by carbonizing indoor temperature with the speed of 8 DEG C/h, and be incubated 1.2h; Then cool to 90 DEG C with the speed of 2 DEG C/h, and be incubated 0.8h, use the steam of identical temperature to carry out damping moisture regain process to timber, process 7h, adjusts back 4% by the moisture content of timber simultaneously; Finally, Temperature fall, to room temperature, takes out timber.
4, wood surface process
A) preparatory stage: timber good for high-temperature process is carried out surface cleaning and drying;
B) processing stage: by brushing through in aluminum sulfate and after rare methane-siliconic acid sodium solution surface treatment is carried out to timber, overcoating brush of laying equal stress on is to 2mm thickness, and maintenance 3 days.
Embodiment 3
A kind of novel timber impregnates carbonizing treatment method, and its step is as follows:
1, choose: sodium metasilicate modulus is 1.6; The particle size range of nano silica powder, nanometer Zinc oxide powder is 20 ~ 70nm.
2, wood impregnation pretreatment
Be that the timber of 1200mm × 130mm × 30mm (long × wide × thick) is placed in application of vacuum tank by specification, first 0.6h carried out to application of vacuum tank and vacuumize; Then inject sodium silicate solution: nano silica powder: nanometer Zinc oxide powder: Firebrake ZB solution: sodium lignin sulfonate=6:0.6:0.7:5:0.4's impregnates modification liquid, after pending tank fills, apply 1.4Mpa, the dwell time is the pressure of 2.3h; Finally carry out 1.3h to application of vacuum tank to vacuumize, what discharge timber was residual impregnates modification liquid, takes out timber.
3, timber high-temperature process
A) preparatory stage: will the good timber of pretreatment be impregnated, put into the carbonization chamber of carbonization device by well word method stacking, and close the gate of carbonization chamber;
B) warm-up phase: charing indoor temperature is carried out drying and preheating to be raised to 70 DEG C in 26h to it, makes the moisture content of timber be less than 12%;
C) intensification, holding stage: be first warmed up to 100 DEG C by carbonizing indoor temperature with the speed of 14 DEG C/h, and be incubated 1.6h; Then be warmed up to 125 DEG C with the speed of 5 DEG C/h, and be incubated 2.4h, make the moisture content of wood internal be 0; The speed of last 16 DEG C/h is warmed up to 215 DEG C, and is incubated 4h, adopts batch (-type) spraying steam method to spray into steam as protective gas in this temperature rise period;
D) temperature-fall period: adopt the cooling of batch (-type) spraying steam method, first cool to 125 DEG C by carbonizing indoor temperature with the speed of 11 DEG C/h, and be incubated 1.4h; Then cool to 100 DEG C with the speed of 5 DEG C/h, and be incubated 1.2h, use the steam of identical temperature to carry out damping moisture regain process to timber, process 9h, adjusts back 7% by the moisture content of timber simultaneously; Finally, Temperature fall, to room temperature, takes out timber.
4, wood surface process
A) preparatory stage: timber good for high-temperature process is carried out surface cleaning and drying;
B) processing stage: by brushing through in aluminum sulfate and after rare methane-siliconic acid sodium solution surface treatment is carried out to timber, overcoating brush of laying equal stress on is to 2mm thickness, and maintenance 3 days.
The testing partial performances result of the carbonized wood that table 1 is made for embodiment 1 ~ 3.
Table 1
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Mass loss rate (%) | 2.42±0.14 | 2.39±0.17 | 2.43±0.12 |
| Air-dry density (g/cm 3) | 0.742±0.011 | 0.734±0.012 | 0.744±0.012 |
| Equilibrium moisture content (%) | 6.06±0.16 | 6.01±0.13 | 6.09±0.15 |
| Oxygen index (OI) (%) | 50.7 | 47.1 | 55.3 |
| Colour brilliance value | 46 | 42 | 48 |
| Insect protected performance | Well | Well | Well |
| Water resistance | Well | Well | Well |
| Corrosion resistant performance | By force | By force | By force |
Certainly, just the preferred embodiments of the disclosure is described in detail above, not limits practical range of the present invention with this, and all equivalence changes done according to principle of the present invention, structure and structure, all should be covered by protection scope of the present invention.
Claims (2)
1. novel timber impregnates a carbonizing treatment method, it is characterized in that: its step is as follows:
1), wood impregnation pretreatment
Timber is placed in application of vacuum tank, first 0.2 ~ 0.6h is carried out to application of vacuum tank and vacuumize; Then inject and impregnate modification liquid, after pending tank fills, apply 1.2 ~ 1.4Mpa, the dwell time is the pressure of 2.1 ~ 2.3h; Finally carry out 1.1 ~ 1.3h to application of vacuum tank to vacuumize, what discharge timber was residual impregnates modification liquid, takes out timber.
2), timber high-temperature process
A) preparatory stage: will the good timber of pretreatment be impregnated, put into the carbonization chamber of carbonization device by well word method stacking, and close the gate of carbonization chamber;
B) warm-up phase: charing indoor temperature is carried out drying and preheating to be raised to 55 ~ 70 DEG C in 16 ~ 26h to it, makes the moisture content of timber be less than 12%;
C) intensification, holding stage: be first warmed up to 90 ~ 100 DEG C by carbonizing indoor temperature with the speed of 10 ~ 14 DEG C/h, and be incubated 1.2 ~ 1.6h; Then be warmed up to 120 ~ 125 DEG C with the speed of 3 ~ 5 DEG C/h, and be incubated 2.2 ~ 2.4h, make the moisture content of wood internal be 0; The speed of last 12 ~ 16 DEG C/h is warmed up to 205 ~ 215 DEG C, and is incubated 2 ~ 4h, adopts batch (-type) spraying steam method to spray into steam as protective gas in this temperature rise period;
D) temperature-fall period: adopt the cooling of batch (-type) spraying steam method, first cool to 120 ~ 125 DEG C by carbonizing indoor temperature with the speed of 8 ~ 11 DEG C/h, and be incubated 1.2 ~ 1.4h; Then cool to 90 ~ 100 DEG C with the speed of 2 ~ 5 DEG C/h, and be incubated 0.8 ~ 1.2h, use the steam of identical temperature to carry out damping moisture regain process to timber, process 7 ~ 9h, adjusts back 4 ~ 7% by the moisture content of timber simultaneously; Finally, Temperature fall, to room temperature, takes out timber.
3), wood surface process
A) preparatory stage: timber good for high-temperature process is carried out surface cleaning and drying;
B) processing stage: by brushing through in aluminum sulfate and after rare methane-siliconic acid sodium solution surface treatment is carried out to timber.
2. novel timber according to claim 1 impregnates carbonizing treatment method, it is characterized in that: the described modification liquid that impregnates by weight part ratio is: sodium silicate solution: nano silica powder: nanometer Zinc oxide powder: Firebrake ZB solution: the mixed solution that sodium lignin sulfonate=2 ~ 6:0.2 ~ 0.6:0.3 ~ 0.7:1 ~ 5:0.1 ~ 0.4 forms.
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Cited By (6)
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| CN106671237A (en) * | 2016-12-09 | 2017-05-17 | 广西北海浩邦新能源科技有限公司 | Wood carbonizing treatment technology |
| CN107225639A (en) * | 2017-06-02 | 2017-10-03 | 安徽宏润工艺品有限公司 | A kind of mildrew resistant finish method of wooden boards |
| CN108501151A (en) * | 2018-04-24 | 2018-09-07 | 浙江粤强家具科技有限公司 | A kind of insect-prevention treatment technique of Chinese fir board |
| CN109159226A (en) * | 2018-09-13 | 2019-01-08 | 中南林业科技大学 | A kind of method of inorganic coagulation material strengthened artificial forest timber |
| CN112847705A (en) * | 2020-12-31 | 2021-05-28 | 中国热带农业科学院橡胶研究所 | Preparation method of decorative solid wood surface layer plate |
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| CN107225639A (en) * | 2017-06-02 | 2017-10-03 | 安徽宏润工艺品有限公司 | A kind of mildrew resistant finish method of wooden boards |
| CN108501151A (en) * | 2018-04-24 | 2018-09-07 | 浙江粤强家具科技有限公司 | A kind of insect-prevention treatment technique of Chinese fir board |
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| CN109159226B (en) * | 2018-09-13 | 2020-09-25 | 中南林业科技大学 | Method for strengthening wood of artificial forest by inorganic cementing material |
| CN112847705A (en) * | 2020-12-31 | 2021-05-28 | 中国热带农业科学院橡胶研究所 | Preparation method of decorative solid wood surface layer plate |
| CN113386223A (en) * | 2021-07-07 | 2021-09-14 | 中南林业科技大学 | Transparent bamboo material and preparation method and application thereof |
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